try {

            String connectionURL = "jdbc:mysql://localhost:3306/webkelasmalam";
            String user_db = "root";
            String pwd_db = "";
            Class.forName("com.mysql.jdbc.Driver");
            Connection connection = DriverManager.getConnection(connectionURL,user_db,pwd_db);
            Statement stm = connection.createStatement();

            String id= request.getParameter("id");
            String sql="SELECT * FROM master_member WHERE username= '"+id+"'";

            ResultSet rs = stm.executeQuery(sql);

            while (rs.next()){